Email delivery for web apps.
https://postmarkapp.com
Email Hosting Providers · Transactional Email
Get access to data on 281,935 websites that are Postmark Customers. We know of 215,668 live websites using Postmark and an additional 66,267 sites that used Postmark historically and 92,673 websites in the United States.
Get a list of 281,935 websites using Postmark which includes location information, hosting data, contact details, 215,668 currently live websites and an additional 411,930 domains that redirect to sites in this list. 66,267 sites that used this technology previouslyand 92,673 websites in the United States currently using Postmark.
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These are sites that we think might use Postmark in the future because of their similarity to other sites that already do.